linux-kernel - Re: [PATCH 03/12] soc: sifive: ccache: Add StarFive JH7100 support

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Message-ID: <243aebb3-70d8-3d83-cb8f-bd1e67e6707e@collabora.com>
Date:   Tue, 7 Mar 2023 01:46:12 +0200
From:   Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To:     Conor Dooley <conor@...nel.org>
Cc:     Lee Jones <lee@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Emil Renner Berthing <kernel@...il.dk>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Richard Cochran <richardcochran@...il.com>,
        Sagar Kadam <sagar.kadam@...ive.com>,
        Yanhong Wang <yanhong.wang@...rfivetech.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, kernel@...labora.com
Subject: Re: [PATCH 03/12] soc: sifive: ccache: Add StarFive JH7100 support

On 3/7/23 01:32, Conor Dooley wrote:
> On Sat, Feb 11, 2023 at 05:18:12AM +0200, Cristian Ciocaltea wrote:
>> From: Emil Renner Berthing <kernel@...il.dk>
>>
>> This adds support for the StarFive JH7100 SoC which also feature this
>> SiFive cache controller.
>>
>> Unfortunately the interrupt for uncorrected data is broken on the JH7100
>> and fires continuously, so add a quirk to not register a handler for it.
>>
>> Signed-off-by: Emil Renner Berthing <kernel@...il.dk>
>> [drop JH7110, rework Kconfig]
>> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
> 
> This driver doesn't really do very much of anything as things stand, so
> I don't see really see all that much value in picking it up right now,
> since the non-coherent bits aren't usable yet.
> 
>> ---
>>   drivers/soc/sifive/Kconfig         |  1 +
>>   drivers/soc/sifive/sifive_ccache.c | 11 ++++++++++-
>>   2 files changed, 11 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/soc/sifive/Kconfig b/drivers/soc/sifive/Kconfig
>> index e86870be34c9..867cf16273a4 100644
>> --- a/drivers/soc/sifive/Kconfig
>> +++ b/drivers/soc/sifive/Kconfig
>> @@ -4,6 +4,7 @@ if SOC_SIFIVE || SOC_STARFIVE
>>   
>>   config SIFIVE_CCACHE
>>   	bool "Sifive Composable Cache controller"
>> +	default SOC_STARFIVE
> 
> I don't think this should have a default set w/ the support that this
> patch brings in. Perhaps later we should be doing defaulting, but not at
> this point in the series.

I will handle this is v2 as soon as the non-coherency stuff is ready.

> Other than that, this is fine by me:
> Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>

Thanks for reviewing,
Cristian

> Thanks,
> Conor.